55111100611 has 12 divisors (see below), whose sum is σ = 65318434992. Its totient is φ = 46346799408.

The previous prime is 55111100557. The next prime is 55111100641. The reversal of 55111100611 is 11600111155.

It is not a de Polignac number, because 55111100611 - 2³³ = 46521166019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55111100641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10607935 + ... + 10613128.

It is an arithmetic number, because the mean of its divisors is an integer number (5443202916).

Almost surely, 2^55111100611 is an apocalyptic number.

55111100611 is a deficient number, since it is larger than the sum of its proper divisors (10207334381).

55111100611 is a wasteful number, since it uses less digits than its factorization.

55111100611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221130 (or 21221123 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 55111100611 its reverse (11600111155), we get a palindrome (66711211766).

The spelling of 55111100611 in words is "fifty-five billion, one hundred eleven million, one hundred thousand, six hundred eleven".